Improvement in hydraulic-power elevators



1. BORGER.

P. in Hydraulic-Power Elevators. 4

Patented Aug. 13,1872.

fnv. P/fara-urHUG/MP/f/c ca MK (asian/V53 Mausi] UNITED STATES PATENTOEEICE.

PETER .I BoReEE, oE CINCINNATI, oEIo.

IMPROVEMENT IN HYDRAULIC-POWEKR ELEVATORS.

Specification forming part of Letters Patent No. 130,468, dated AugustI3, 1872.

Specification of a Hydraulic Elevator, invented by PETER J. BORGER, ofCincinnati, Hamilton county, Ohio.

Nature and Objects of the Invention.

The iirst and chief feature of my invention consists in a provisionwhereby the power of water under pressuresuch as in the ordina- `ryhydrant main-is made'available to lift a cage or platform to any desiredheight through the instrumentality of a piston, of sufficiently- -largearea, but comparatively short stroke,

such as to enable the confining-cylinder and its appendages to becontained within au ordinary basement. For this purpose I interposebetween the hydraulic motor and the cage or platform a system of cordsand pulleys which cause the comparatively short stroke of the piston tobe transfered with greatly-increased speed and length of stroke to thecage or platform. The second feature of my invention is a system ofobliquely-presented rollers, of an. gular periphery, which, engaging incorrespondin g receding angles of the guide bars or stanchions, confinethe cage or platform to an absolutely-vertical path.

General Description.

Figure 1 is a side elevation of a hydraulic elevator or hoist embodyingmy invention. Fig. 2 is a horizontal section of a stanchion and top viewof a guide-roller and portion of the cage or platform on a larger scalethan the preceding figure.

A represent two of the four guide bars or stanchions of an ordinaryhoist-elevator. `B is an ordinary cage or platform, furnished withrollers C having the represented salient angular peripheries, whichperipheries engage in corresponding receding angles D in the guide barsor stanchions. E is a cylinder, whose lower end communicates, by meansof a suitable pipe, F, and cock G, with a water head or main-such, forexample, as that of a customary hydrant or water main in cities. Hrepresents a piston, and I a pistonrod, which latter terminates in ajournal-bearing, J, for a system or set of sheaves, K. Journaled instationary bearings underneath said cylinder is another set of sheaves,L. A cord or cable, M, having one end of it attached to the cylin der orother stationary object, is rove around the two sets of sheaves, in themanner represented, which dift'er in no respect from that of an ordinaryblock and tackle, and its other end, being carried over suitable pulleysN O, is secured to the cage-top in any approved manner.

I have designed my apparatus for the "use of water, but it is manifestthat steam or compressed air might be employed, and differentialcylnders might take the place of the sheaves here represented.

Claims.

I claim as new and of my invention- 1. rIlhe provision of short cylinderE of large area, piston H I, movable sheaves K, stationary sheaves L,cable M, pulleys N Ol, and cage or platform B, substantially as and forthe pur pose set forth.

2. The oblique and angular rollers Q, in the described combination, withguide-bars A having receding angles D, as explained.

In testimony of which invention I hereunto set my hand.

PETER J. BURGER.

Attest:

GEO. H. KNIGHT, JAMES H. LAYMAN.

